20512157913

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{889937}}^1$

素因数の和:890153

約数の個数: 24

約数和(自身を含む): 32069805768

約数和(自身を除く): 11557647855

約数列:

[1, 3, 9, 13, 39, 117, 197, 591, 1773, 2561, 7683, 23049, 889937, 2669811, 8009433, 11569181, 34707543, 104122629, 175317589, 525952767, 1577858301, 2279128657, 6837385971, 20512157913]

約数ペア:

[(1, 20512157913), (3, 6837385971), (9, 2279128657), (13, 1577858301), (39, 525952767), (117, 175317589), (197, 104122629), (591, 34707543), (1773, 11569181), (2561, 8009433), (7683, 2669811), (23049, 889937)]